Advertisements
Advertisements
प्रश्न
A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.
उत्तर
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
संबंधित प्रश्न
Fill in the following blank with suitable words:
The lines of ........... round a straight current-carrying conductor are in the shape of ...........
What is a lodestone?
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.
A dry cell can supply a charge of 800 C. If continuous current of 8.0 mA is drawn, calculate the time in which cells will discharge completely.
Repulsion is a surer test of magnetic condition of a body than attraction. Explain.
If the key in the arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
A student fixes a white sheet of paper on a drawing board. He places a bar magnet in the centre and sprinkles some iron filings uniformly around the bar magnet. Then he taps gently and observes that iron filings arrange themselves in a certain pattern.
- Why do iron filings arrange themselves in a particular pattern?
- Which physical quantity is indicated by the pattern of field lines around the bar magnet?
- State any two properties of magnetic field lines.
State the inference drawn about the direction of the magnetic field lines on the basis of the following diagrams.
 |
 |
| Figure 'a' | Figure 'b' |
