In a simple circuit, why does the bulb glow when you close the switch?
b) Closing the switch completes the circuit
Kilowatt hour is the unit of
c) electrical energy
When a circuit is open, _____________ cannot pass through it. .
Current
The ratio of the potential difference to the current is known as ________.
Resistance
The wiring in a house consists of _________ circuits.
Parallel
The power of an electric device is a product of _________ and __________.
Voltage and Current
LED stands for ___________________
Light Emitting Diode
Electric current
ampere
Potential difference
volt
Specific resistance
ohm meter
Electrical power
watt
Electrical energy
joule
Ohms law states the relationship between power and voltage.
FALSE (Ohm's law states the relationship between current and voltage.)
MCB is used to protect house hold electrical appliances.
TRUE
The SI unit for electric current is the coulomb.
FALSE ( The SI unit for electric current is the ampere)
One unit of electrical energy consumed is equal to 1000 kilowatt hour.
FALSE (One unit of electrical energy consumed is equal to 1 kilowatt hour)
The effective resistance of three resistors connected in series is lesser than the lowest of the individual resistances.
FALSE (The effective resistance of three resistors connected in series is higher than the lowest of individual resistances.)
(A): Electric appliances with a metallic body have three wire connections... (R): Three pin connections reduce heating of the connecting wires
(c) Assertion is true, but the reason is false.
(A): In a simple battery circuit the point of highest potential is the positive terminal of the battery... (R): The current flows towards the point of the highest potential
(c) Assertion is true, but the reason is false.
(A): LED bulbs are far better than incandescent bulbs... (R): LED bulbs consume less power than incandescent bulbs
(a) Both the assertion and the reason are true and the reason is the correct explanation of assertion.