Advertisements
Advertisements
प्रश्न
A battery can supply a charge of 25 × 104 C. If the current is drawn from battery at the rate of 2.5 A, calculate the time in which battery will discharge completely.
Advertisements
उत्तर
Charge = Q = 25 × 104 C
Electric current = I = 2.5A
Time = t = ?
I = `"Q"/"t"`
t = `"Q"/"I"`
t = `(25 xx 10^4)/2.5 = 10^5`s
t = 100000 s
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable words:
Magnetic field lines leave the .......... pole of a bar magnet and enter at its .......... pole.
Fill in the following blank with suitable words:
The earth's magnetic field is rather like that of a .......... magnet with its .......... pole in the northern hemisphere.
Define magnetic field lines.
Explain the method of plotting the magnetic field lines by using a small compass needle.
Write a note on the 'magnetic field'.
How do you account for the following fact?
Soft iron keepers help to prevent the magnets from losing their magnetic properties.
State whether true or false. If false, correct the statement.
Magnetic field lines always repel each other and do not intersect.
A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to

Write the properties of magnetic lines of force.
