Quarter 3

1

Resistance increases with increase in:

A Area B Length C Temperature (for metals) D Both B and C

2

Another universal logic gate is:

A NOR B AND C OR D XOR

3

A relay is an electrically operated:

A Capacitor B Switch C Resistor D Battery

4

Which quantity remains the same in all components of a series circuit?

A Voltage B Current C Resistance D Power

5

Which graph represents Ohm’s law?

A Current vs Resistance B Voltage vs Resistance C Current vs Voltage D Power vs Voltage

6

The basic unit of digital information is:

A Byte B Bit C Word D Nibble

7

Potential difference is the work done per unit:

A Charge B Current C Resistance D Time

8

A galvanometer can detect:

A Only AC B Only DC C Small currents D High voltages

9

The experiment for demonstration of resistance verifies:

A Ohm’s Law B Newton’s Law C Faraday’s Law D Coulomb’s Law

10

A qubit can exist in:

A Only 0 state B Only 1 state C Both 0 and 1 simultaneously D No state

11

Mathematical form of Ohm’s Law is:

A V = IR B I = VR C R = VI D V = I/R

12

Which factor does NOT affect resistance of a conductor?

A Length B Area C Material D Voltage

13

If voltage across a resistor is doubled, the current will:

A Remain same B Become half C Double D Become zero

14

The SI unit of resistance is:

A Ampere B Volt C Ohm D Watt

15

The material used for making fuse wire should have:

A High melting point B Low melting point C High resistance D Low resistance

16

Which gate is known as a universal gate?

A AND B OR C NAND D XOR

17

When cells are connected in series, the total EMF is:

A Average of EMFs B Difference of EMFs C Sum of EMFs D Product of EMFs

18

In a series combination of resistors, the total resistance is:

A Less than the smallest resistance B Equal to one resistor C Sum of all resistances D Product of resistances

19

Which symbol represents a cell in a circuit diagram?

A Zigzag line B Long and short parallel lines C Circle with a cross D Straight line

20

Which appliance uses maximum power?

A Electric bulb B Electric iron C Electric bell D Radio

21

Which device converts electrical signals into light?

A Diode B Transistor C LED D Relay

22

An LED emits light when it is:

A Reverse biased B Forward biased C Unbiased D Overheated

23

Resistance of a conductor depends upon:

A Length B Area of cross-section C Material D All of these

24

Which electronics field is mainly used in computers?

A Analogue electronics B Digital electronics C Power electronics D Thermal electronics

25

Which of the following converts electrical energy into light?

A Heater B Motor C Bulb D Fan