calculate the resis†an ce if 5 ampere of electric current flows through a conductor having potential difference between two points is equal to 15 v

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Q. The potential difference between two points is

35 V

and the resistance of the conductor is

5 Ω

. The current flowing will be .

Question 26
A current of 1 ampere flows in a series circuit containing an electric lamp and a conductor of 5 $Ω$ when connected to a 10 V battery. Calculate the resistance of the electric lamp.
Now if a resistance of 10 $Ω$ is connected in parallel with this series combination, what change (if any) in current flowing through 5 $Ω$ conductors and the potential difference across the lamp will take place? Give reason.

Q. An electric current of 12 ampere flows through a conductor in 15 seconds. Find the amount of charge that flows through the conductor.

Q. (a) Name a device which helps to maintain a potential difference across the ends of a conductor.
(b) What is meant by saying that the potential difference between two points is 1 V?
(c) Define Ohm's law. Write an expression for it.
(d) What is the unit of resistance?
(e) When the potential difference between the terminals of an electric heater is 110 V, a current of 5 A flows through it. What current will flow through the heater if the potential difference is increased to 220 V? What is the resistance of heater?

Q. The electric current

(I)

flowing through a circuit is directly proportional to the potential difference

(V)

in it. When the potential difference is

60

volts, the electric current is

1.5

ampere. Find the electric current flowing through the circuit when the potential difference is

100

volt.

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