# 10th Class Physics Chapter 5 Current Electricity Short Question Answer

We are providing all Students from 5th class to master level all exams preparation in free of cost. Now we have another milestone achieved, providing all School level students to the point and exam oriented preparation question answers for all science and arts students.

After Online tests for all subjects now it’s time to prepare the next level for Punjab board students to prepare their short question section here. We have a complete collection of all classes subject wise and chapter wise thousands questions with the right answer for easy understanding.

Here we are providing complete chapter wise Physics questions and Answers for the 10th class students. All the visitors can prepare for their 10th class examination by attempting below given question answers.

In this List we have included all Punjab boards and both Arts and Science students. These Boards students can prepare their exam easily with these short question answer section

Lahore Board 10th classes short questions Answer

Rawalpindi Board 10th classes short questions Answer

Gujranwala Board 10th classes short questions Answer

Multan Board 10th classes short questions Answer

Sargodha Board 10th classes short questions Answer

Sahiwal Board 10th classes short questions Answer

DG Khan Board 10th classes short questions Answer

Bahwalpur Board 10th classes short questions Answer

All above mention Punjab Boards students prepare their annual and classes test from these online test and Short question answer series. In coming days we have many other plans to provide all kinds of other preparation on our Gotest website.

How to Prepare Punjab Board Classes Short Question Answer at Gotest

• Just Open the desired Class and subject which you want to prepare.
• You have Green bars which are Questions of that subject Chapter. Just click on Bar, it slides down and you can get the right answer to those questions.
• You can also Rate those question Answers with Helpful or not to make it more accurate. We will review all answers very carefully and also update time to time.

Now you can start your preparation here below

## 10th Class Physics Chapter 5 Current Electricity Short Question Answer

Define resistance.

The property of a substance which offers opposition to the flow of current through it is called its resistance. Its unit is Ohm
State Ohm's law.

the amount of current 1 passing through a conductor is directly proportional to the potential difference V applied across its ends provided the temperature and the physical state of the conductor, does not change. V=IR
Limitations: Ohm’s law is applicable only in case of metallic conductors when their temperature and physical state do not change.
Differentiate between e.m.f and potential difference.

Potential difference:
1. Potential difference is smaller than e.m.f
2. Potential difference depends upon resistance.
3. Potential difference is result.
Define electric current. Give its formula.

The rate of flow of electric charge through any cross sectional area is called current.
Formula: I = Q/t
unit: Its S.I. unit is Ampere
Define unit of electric current.

Unit of current is Ampere and defined as.
If one coulomb charge pass through an area in one second then current would be one Ampere. 1 Ampere = Cs-1
Difference between conductor and insulator.

Conductor: Such a material which allows electricity to pass through it, are called conductor e.g. metals are good conductors of electricity because they have free electrons.
Discuss briefly the hazards of household electricity.

The damages of the electricity for life are called electricity hazards.The voltage of 50 V or 50 ma current could fatal for life.
What is difference between cell and battery?

Cell: It is the source of e.m.f to flow the charges. Cell is a specific name of source of e.m.f in which chemical energy is converted into electrical energy.
Difference between A.C and D.C current.

A.C:
1. The current which changes its direction of flow again and again, is known as alternating current or A.C.
2. Current produced from A.C generator.
Define unit of resistance.

When a potential of one volt is applied across the end of conductor and one ampere of current passes through it, then its resistance will be one Ohm.
Define electromotive force.

The energy converted from non-electrical corms to electrical form when one coulomb of positive charge passes through the battery.
E.m.f = Energy/Change.
Its unitis volt(V)
Describe four safety measures that should be taken in connection with the household circuit.

i. Use of fuse
ii. Use of earth wire
iii. Use of circuit breakers
iv. Use of good insulated cables.

Define conventional current.

Current flowing from positive to negative terminal of a battery due to the flow of positive charges is called conventional current.
What is ammeter?

It is an instrument which is used to measure the quantity of current in the circuit. Its resistance is very low. It is always connected in series in the circuit.
What is voltmeter?

It is an instrument which is used to measure the voltage or potential difference across the appliance. It is also used the measure the e.m.fin battery. Its resistance is very high. It is always connected in parallel in the circuit.
Can current flow in a circuit without potential difference?

No, current cannot flow without the presence of a potential difference.
Why a bird can sit harmlessly on high tension wires?

Birds can sit harmlessly on tension wires. There is one potential but no potential difference which is necessary to flow the current.That is why the birds can sit on high tension wires safely.
Define specific resistance.

The resistance of one meter cube of a substance is equal to its specific resistance.It unit is Ohm meter.
Define the time period of A.C.

The time interval after which the A.C. voltage or current repeats its value is known as its time period.
Define kilo watt hour.

The amount of energy delivered by power of one kilo watt in one hour is called kilo watt hour.
1 kilo watt = 3.6 Mj
Why does not diamond conduct electricity?

Diamond does not conduct electricity. Because it has no free electrons.
Define potential difference.

Potential difference across the two ends of a conductor causes the dissipation electrical energy into other forms of energy as charges flow through the circuit.
What is galvanometer?

It is an instrument which is used to indicate the presence of current in the circuit. It is very sensitive. Its resistance is very low. It is always connected in series in the circuit.
Define electric power.

The amount of energy supplied by current in unit time is known as electric power.
Units: Its unit is watt.
P = energy/ time.
Unit is joule
What is fuse?

Fuse is a safety device that is connected in series with live wire in the circuit to protect the equipmentâ€™s when excess of current flows.

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.
error: