1.6 mA current is flowing in conducting wire then the number of electrons flowing per second
Correct answer: B. 1016
- A. 1011
- B. 1016
- C. 1019
- D. 1015
Explanation
I=1.6mA=1.6×10−3Since the charge on the electron is: e=1.6×10−19C, t=1s So, N=eI =eqt Where N is the number of electrons flowing per second. =1.6×10−19 × 1.6×10−3 =10¹⁶
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Current Electricity questions
A 25 W, 220 V bulb and a 100 W, 220 V bulb are joined in series and connected to mains which bulb will glow brighter
Electric current is generated by:
A cell is connected to a resistor. What is the e.m.f of the cell equal to?
A primary cell has an emf of 1.5V, when short circuited it gives a current of 3A. The internal resistance of the cell is:
For which of the following the resistance decreases on increasing the temperature?
The resistances of a wire at temperatures 1°C and 0°C are related by: