Question Bank
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The property of a material to oppose the flow of current is:
A resistor has a resistance of 5 Ohms. If a potential difference of 10 Volts is applied across it, what is the current?
Which rule is used to find the direction of magnetic field around a straight current carrying conductor?
Calculate the equivalent resistance of two 4 Ohm resistors connected in parallel.
A 100 Watt bulb is used for 10 hours daily. How many 'units' of electricity does it consume in one day?
A transformer has 200 turns in the primary coil and 1000 turns in the secondary coil. If the primary voltage is 220V, what is the secondary voltage?
What is the resistance of an electric toaster rated 1000W at 250V?
If three resistors of 2 Ohms, 3 Ohms, and 5 Ohms are connected in series, what is the current through the 3 Ohm resistor when connected to a 20V battery?
When the temperature of a metallic conductor increases, its resistance usually:
In a parallel circuit, if one bulb blows out, the other bulbs will:
Calculate the power of a motor that takes 5 Amperes from a 220V line.
Which of the following describes Faraday's law of electromagnetic induction?
In Fleming's Left Hand Rule, the middle finger represents the direction of: