Advertisements
Advertisements
प्रश्न
The power of an electric device is a product of ______ and ______.
Advertisements
उत्तर
The power of an electric device is a product of electric current and the potential difference.
APPEARS IN
संबंधित प्रश्न
The circuit diagram given below shows the combination of three resistors R1, R2 and R3:
Find :
(i) total resistance of the circuit.
(ii) total current flowing in the circuit.
(iii) the potential difference across R1.
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
The circuit diagram (Fig.) shows a battery of e.m.f. 6 volts and internal
resistance of 0.8 Ω oonnected in series. Find the
(a) Current reoorded by the ammeter,
(b) P.d. across the terminals of the resistor B,
( c) Current passing through each of the resistors B, C and D, and
( d) P.d. across the terminals of the battery.
What is the function of a step-up transformer?
Tick (✓) the correct choice among the following :
Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?
An electric iron is rated 750 W, 230 V. Calculate the electrical energy consumed by the press in 16 hours.
What is meant by internal resistance of a cell?
1020 electrons, each having a charge of 1.6 x 10-19 C, flows in a circuit V is 0.1s. What is the current in ampere?
Find the odd one out.
Loudspeaker, Bar magnet/magnet, Electric motor, Microphone.
