Advertisements
Advertisements
Question
A current of 0.2 A flows through a conducting wire for 5 minutes. How much charge will flow?
Solution
Given: I = 0.2A, t = 5 minute = 5 × 60s = 300s.
Charge Q = I × t = 0.2 × 300 = 60 C.
APPEARS IN
RELATED QUESTIONS
State the relation between potential difference, work done and charge moved.
A resistance of 20 ohms has a current of 2 amperes flowing in it. What potential difference is there between its ends?
A current of 200 mA flows through a 4 kΩ resistor. What is the p.d. across the resistor?
100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor?
Define the following:
Potential difference
What would you suggest to a student if while performing an experiment he finds that the pointer/needle of the ammeter and voltmeter do not coincide with the zero marks on the scales when the circuit is open? No extra ammeter/voltmeter is available in the laboratory.
What do you understand by the resistance of a wire?
Two bulbs are marked 100 W, 220 V and 60 W, 110 V. Calculate the ratio of their resistances.
A boy records that 4000 joules of work are required to transfer 10 coulombs of charge between two points of a resistor of 50 Ω. The current passing through it is:
The SI unit of potential difference is ______.