Advertisements
Advertisements
Question
A simple electric circuit has a 30 V battery and a resistor ot 60 o. What will be the current in the circuit? The resistance of the oonnecting wires is negligible.
Advertisements
Solution
A/c to Ohm's law,
I = `"V"/"R"`
Here V = 30 volt and R = 60 Ω
`therefore "I" = 30/60 = 0.5` A
APPEARS IN
RELATED QUESTIONS
How much energy does a 100 W electric bulb transfer in 1 minute?
(a) 100 J
(b) 600 J
(c) 3600 J
(d) 6000 J
Explain why, filament type electric bulbs are not power efficient.
State three factors on which the heat produced in a metallic wire due to passage of current in it depends.
An electric current is passed through a metallic wire. The wire gets heated up. Give the reason. Is it possible to melt the wire by passing a heavy current?
Point out two main disadvantages of ‘Tree System’.
Why is the heating element of an electric oven wound on a helix? State the reason.
Of the three connecting wires in a household circuit: Which two of the three wires are at the same potential? In which of the three wires should the switch be connected?
How can electric energy consumed by an electric appliance be calculated in kilowatt hour (kWh)?
An electric bulb is rated as 100W – 250V. What information does it convey? Calculate the current through the filament of the bulb.
