Which of the following is a practical reason for using a series combination of resistors in an electrical circuit?
To increase total resistance and limit current
In a series circuit, the same current flows through every resistor, and the total resistance equals the sum of the individual resistances.
This higher total resistance is used deliberately to limit the current drawn from the source, protecting the circuit.
Hence, this is the correct answer.
The resistance of a conductor depends on the:
A student constructs a circuit with a battery of 12 V and two resistors of 6 ohms and 4 ohms connected in series. What is the total current flowing through the circuit according to Ohm's Law?
If the power consumed by a bulb is 60 W and the voltage across it is 120 V, what is the resistance of the bulb?
Which of the following graphs best represents Ohm’s Law for a resistor at constant temperature?
What is the function of the cartridge (such as porcelain) encasing the fuse wire?
What does the given symbol represent in an electric circuit diagram?
Suppose a household replaces all 5 A sockets with 15 A sockets and connects multiple high-power appliances to each. What potential risk does this introduce, and why?
Electric fuses are used in household circuits primarily to ___________.
A student sets up two circuits: Circuit X uses a thin, long copper wire, and Circuit Y uses a thick, short copper wire, both connected to identical batteries. Which circuit will have a higher resistance, and why?
In a circuit, two resistors R₁ and R₂ are connected in parallel. If R₁ = 4 Ω and R₂ = 12 Ω, and the total voltage across the parallel combination is 6V, what is the total current flowing in the circuit?
Which of the following is a bad conductor of electricity?
In general, in an alternating current circuit
The laws of electromagnetic induction have been used in the construction of a
A 220 volt and 100 watt bulb is connected to a 110 volt source. The power consumption by the bulb is
Which of the following statement is correct?
I. 1 kWh = 3.6 × 10 6J.
II. The SI unit of electric current is the ampere.