Advertisements
Advertisements
Question
A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.
Advertisements
Solution
Charge = Q = 5000 C
Time = t = 2 houe 30 minutes
t = 2 × 60 + 30 = 150 min
t = 150 × 60 second
t = 9000 second
Electric current = I = ?
I = `"Q"/"t"`
I = `5000/9000 = 0.555` A
APPEARS IN
RELATED QUESTIONS
In the straight wire A, current is flowing in the vertically downwards direction whereas in wire B the current is flowing in the vertically upward direction. What is the direction of magnetic field:
(a) in wire A?
(b) in wire B?
Name the rule which you have used to get the answer.
A thick wire is hanging form a wooden table. An anticlockwise magnetic field is to be produced around the wire by passing current through this wire by using a battery. Which terminal of the battery should be connected to the:
(a) top end of wire?
(b) bottom end of wire?
Give reason for your choice.
An electron beam enters a magnetic field at right angles to it as shown in the Figure.
The direction of force acting on the electron beam will be:
to the left
to the right
into the page
out of the page
Explain what you understand by magnetic induction. What role does it play in attraction of a piece of iron by a magnet?
Draw the pattern of magnetic field lines near a bar magnet placed with its North Pole pointing towards the geographic North. Indicate the position of neutral points by marking X.
Select the correct option:
A bar magnet is rubbed on a bar of steel along its length 20 times. The bar of steel gets magnetised due to the process of:
Define the agonic line.
Complete the following diagram of magnets to show the lines of force.

The relation between weber and Tesla is ______.
