Advertisements
Advertisements
Question
If a fuse contains a 5 A fuse wire and the voltage is 240 V, what is the maximum power (wattage) which may be taken from the circuit?
Advertisements
Solution
Maximum power that can be taken, P =VI = 240 x 5 = 1200 w.
APPEARS IN
RELATED QUESTIONS
Which of the two is connected in series : ammeter or voltmeter?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
A bulb marked 12 V, 24 W operates on a 12 volt car battery for 20 minutes. Calculate:
(i) The current flowing through it, and
(ii) The energy liberated.
Two electric bulbs rated 100 W; 220 V and 60 W; 220 V are connected in parallel to electric mains of 220 V. Find the current drawn by the bulbs from the mains.
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.
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.
Conventionally, the direction of the current is taken as:
