Question

rubber handgloves while working with electricity because rubber is an insulator and protects them from
electric shocks (see Figure 20). Wood is also a good insulator. We are now in a position to answer the
following questions :
Very Short Answer Type Questions
1. Name the law which relates the current in a conductor to the potential difference across its ends.
2. Name the unit of electrical resistance and give its symbol.
3. Name the physical quantity whose unit is "ohm".
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4. What is the general name of the substances having infinitely high electrical resistance ?
5. Keeping the resistance constant, the potential difference applied across the ends of a component is halved
By how much does the current change ?
6. State the factors on which the strength of electric current flowing in a given conductor depends.
7. Which has less electrical resistance : a thin wire or a thick wire (of the same length and same material)?
8. Keeping the potential difference constant, the resistance of a circuit is halved. By how much does the current
change?
9. A potential difference of 20 volts is applied across the ends of a resistance of 5 ohms. What current will flow
in the resistance ?
10. A resistance of 20 ohms has a current of 2 amperes flowing in it. What potential difference is there between
its ends?
11. A current of 5 amperes flows through a wire whose ends are at a potential difference of 3 volts. Calculate
the resistance of the wire.
12. Fill in the following blank with a suitable word :
Ohm's law states a relation between potential difference and
ort Answer Type Questions
13. Distinguish between good conductors, resistors and insulators. Name two good conductors, two resistors
and two insulators.
Classify the following into good conductors, resistors and insulators :​

Answer 1

I think this app is for small and simple questions

not for the chapter