Advertisements
Advertisements
प्रश्न
Tick (✓) the correct choice among the following :
(a) A strong short bar magnet is dropped into a solenoid connected to a
galvanometer as shown in fig . The galvanometer shows a deflection to the left when the current in the coil as seen from above is counter clockwise. Which one of the following shows the correct deflection of the galvanometer when the magnet is at posi tions A, Band C.
विकल्प
At A At B At C Left left left At A At B At C Left zero zero At A At B At C Left zero right At A At B At C Left right left At A At B At C Left right right
Advertisements
उत्तर
| At A | At B | At C |
| Left | left | left |
APPEARS IN
संबंधित प्रश्न
Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason?
How many microamperes are there in 1 ampere?
A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?
In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.
What current flows from the battery?
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(d) Which circuit would have less current in it?
Two resistors of 4 Ω and 6 Ω are connected in parallel. The combination is
connected across a 6 volt battery of negligible resistance. Calculate:
( i) The power supplied by the battery,
(ii) The power dissipated in each resistor.
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh (ii) joule.
