Advertisements
Advertisements
Question
Advertisements
Solution
A/c to Ohm's law
R = `"V"/"I"`
Here, V = 240 volt and I = 6 A
R = `240/6` = 40 Ω
Thus the resistance of the electriciron is 40 Ω
APPEARS IN
RELATED QUESTIONS
You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?
In series combination of resistances ______.
What potential difference is needed to drive a current o f 1 A through a 5 Ω resistor?
To increase the effective resistance in a circuit, the resistors are connected in _______________ .
When do you say that the resistors are connected in this way? Draw a circuit diagram.
State the effect of rise in temperature on the resistance of semi-conductors.
How does the resistivity of an alloy such as constantace depends on temperature.
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell. Calculate the current in each resistor.
The resistance of the hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamps, when not in use?
