Advertisements
Advertisements
प्रश्न
Study the following circuit and find out:
(i) Current in 12 Ω resistor.
(ii) The difference in the readings of A1 and A2, if any.
Advertisements
उत्तर
Firstly calculating the equivalent resistance in the circuit.
`"R"_"eq" =( 24xx24)/(24+24)+12=24Ω`
(i) The current through the 12 Ω resistor is given by:
`"I" = 6/24=1/4 "A"`
APPEARS IN
संबंधित प्रश्न
If the lamps are both the same in the figure given below and if A1 reads 0.50 A, what do A2, A3, A4 and A5 read?
Christmas tree lamps are usually wired in series. What happens if one lamps breaks?
For a heater rated at 4 kW and 220 V, calculate:
(a) the current,
(b) the resistance of the heater,
(c) the energy consumed in 2 hours, and
(d) the cost if 1 kWh is priced at Rs 4.60.
A switch must be connected in:
(a) Live wire (b) neutral wire
(c) earth wire (d) either earth or neutral wire
An auto lamp is joined to a battery of e.m.f. 4 V and internal resistance 2.5Ω. A steady current of 0.5 A flows through the circuit. Calculate the
(a) Total energy provided by battery in 10 minutes,
(b) Heat dissipated in the bulb in 10 minutes.
Electrical power P is given by the expression P = (Q × V) ÷ time
(a) What do the symbols Q and V represent?
(b) Express the power P in terms of current and resistance explaining the meanings of symbols used there in.
Fill in the blank :
1 mA = ............................. A.
How should the electric lamps in a building be connected?
