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Half Book 2

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20
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1

Fusion requires very high:

2

Which is NOT a source of background radiation?

3

Which electromagnetic waves are used for sterilizing medical equipment?

4

Which signal type is more resistant to noise?

5

Electric current is defined as the rate of flow of:

6

The nature of light includes

7

The force on a current carrying conductor in a magnetic field depends on:

8

Beta particles are:

9

Inside a long solenoid, the magnetic field is:

10

Resistivity of a material depends on:

11

Electromotive force (EMF) of a source is the energy supplied per unit:

12

Which particles are responsible for electric current in metallic conductors?

13

The purpose of earthing is to:

14

A variable resistor is also known as:

15

The internal resistance of a cell causes:

16

The angle made by Earth’s magnetic field with the horizontal is called:

17

Resistance is defined as the opposition to the flow of:

18

In digital electronics, logic 1 usually represents:

19

The SI unit of potential difference is:

20

The main source of energy of the Sun is:

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