Advertisements
Advertisements
प्रश्न
Which effect of current is utilised in the working of an electric fuse?
Advertisements
उत्तर
The heating effect of current is utilised in the working of an electric fuse.
APPEARS IN
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Rheostat (variable resistance)
Write down the formula which relates electric charge, time and electric current
Why should the resistance of:
a voltmeter be very large?
The p.d. across a 3 Ω resistor is 6 V. The current flowing in the resistor will be:
(a) `1/2A`
(b) 1 A
(c) 2 A
(d) 6 A
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?
A battery and three lamps are connected as shown:
Which of the following statements about the currents at X, Y and Z is correct?
(a) The current at Z is greater than that at Y.
(b) The current at Y is greater than that at Z.
(c) The current at X equals the current at Y.
(d) The current at X equals the current at Z.
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
Tick (✓) the correct choice among the following :
There are 500 turns and 2000 turns in the primary and secondary coil of a
transformer respectively. If th e output voltage is 1000 V, how large is the
input voltage?
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
Answer the following question.
What is the function of a galvanometer in a circuit?
______ is used to measure the electric current.
What are the effects of electric current?
For current to flow, one needs art open circuit.
What does the direction of current convey?
