Chapter 13 - Current and Electricity - 2

Chapter 13 - Current and Electricity - 2

1. Resistance of a conductor is directly proportional to its_________.

a) Thickness
b) Type
c) Length

2. The SI unit of power is_________.

a) Watt
b) Ohm
c) Coulombs

3. The unit of emf is ___________.

a) Ampere
b) Volt
c) Watt

4. Wheatstone bridge is a circuit used for determining the unknown____________.

a) Resistance
b) Voltage
c) Current

5. The fractional change in resistance per kilvin is known as ______________.

a) Co efficient of resistance
b) Temperature co efficient
c) Temperature co efficient of resistance

6. Conductivity is the ____________ of resistivity.

a) Reciprocal
b) All are correct
c) Oppodite

7. The SI unit of electric current is:

a) Coulomb
b) Volt
c) Farad
d) Ampere

8. The net charge flowing across the sectional area per unit time is known as:

a) Electric current
b) Voltage
c) Ampere
d) Electric flow

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