Advertisements
Advertisements
Question
Advertisements
Solution
We know that, R = `"V"^2/"P"`
Thus, voltage remaining constant, resistance is inversely proportional to the power of the appliance; which means resistance of 60 W (220V) bulb is greater.
Hence, the given statement is false.
APPEARS IN
RELATED QUESTIONS
What Makes an Electric Current Flow in a Wire?
A Radio Set Draws a Current of 0.36 a for 15 Minutes. Calculate the Amount of Electric Charge that Flows Through the Circuit.
In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.
What current flows from the battery?
In the circuit diagram given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(b) In which circuit, if one bulbs be brighter?
In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.
- A and B
- A and C

What would be the danger involved in replacing a blown fuse with the one which would carry a large current?
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. The resistance of each heater
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
What is the speed of electric current?
