Advertisements
Advertisements
Question
A simple electric circuit has 24 V battery and a resistor of 60 Ω. What will be the current in the circuit? The resistance of the connecting wires is negligible.
Advertisements
Solution
current = `"potentia difference (V)"/"Resistance (R)"`
Here, V = 24 volt, R = 60 Ω
current = `24/60` = 0.4 A
APPEARS IN
RELATED QUESTIONS
At what frequency is AC supplied to residential houses?
The unit for expressing electric power is:
(a) volt
(b) joule
(c) coulomb
(d) watt
A geyser is rated 1500 W, 250 V. This geyer is connected to 250 V mains. Calculate:
(i) the current drawn
(ii) the energy consumed in 50 hours, and
(iii) the cost of energy consumed at Rs. 4.20 per kWh
A current passes through a resistor. Let K1 and K2 represent the average kinetic energy of the conduction electrons and the metal ions, respectively.
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.
(a) Plastic
(b) Steel
(c) Copper
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
You are required to connect a bulb, a fan and a socket outlet to the mains in one set A and an air-conditioner and a refrigerator to the mains in other set B. Will you recommend the wire of same thickness and same insulation in both? explain your answer.
A conductor of 10 Ω is connected across a 6 V ideal source. The power supplied by the source to the conductor is ______.
