alleryElectric current is defined as the rate of flow of:
- power
- electric charge
- voltage
- resistance
Show answer and solution
Correct answer: B. electric charge
Current is the rate of flow of electric charge: I = Q/t.
CBSE Class 10 Effects of Electric Current — practice questions
Explore 163 free Effects of Electric Current questions in CBSE Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.
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Electric current is defined as the rate of flow of:Read the answer and worked solution →The SI unit of electric current is the:Read the answer and worked solution →The SI unit of electric charge is the:Read the answer and worked solution →The charge on a single electron is approximately:Read the answer and worked solution →By convention, the direction of electric current is taken to be:Read the answer and worked solution →A continuous and closed path along which current flows is called an:Read the answer and worked solution →One ampere of current equals one coulomb of charge flowing per:Read the answer and worked solution →Ohm's law states that, at constant temperature:Read the answer and worked solution →The SI unit of electrical resistance is the:Read the answer and worked solution →In a series circuit, the electric current through each component is:Read the answer and worked solution →In a parallel circuit, the potential difference across each component is:Read the answer and worked solution →Electric power is given by the formula:Read the answer and worked solution →An ammeter, used to measure current, is always connected in the circuit in:Read the answer and worked solution →The SI unit of electric current is:Read the answer and worked solution →A charge of 60 C passes through a wire in 2 minutes. Find the current.Read the answer and worked solution →According to Ohm's law, V = ?Read the answer and worked solution →A bulb has a resistance of 30 Ω and operates at 6 V. Find the current.Read the answer and worked solution →In a circuit, where is the ammeter connected and where is the voltmeter connected?Read the answer and worked solution →Two resistors 4 Ω and 6 Ω are connected in series. Find R_total.Read the answer and worked solution →Two resistors 6 Ω and 3 Ω are connected in parallel. Find R_total.Read the answer and worked solution →Three resistors of 5 Ω each are connected in parallel. Find R_total.Read the answer and worked solution →How does the resistance of a wire change if its length is doubled while area stays the same?Read the answer and worked solution →A 12 V battery is connected across two resistors 4 Ω and 8 Ω in series. The current is:Read the answer and worked solution →Why is nichrome used for the heating element of an electric iron rather than copper?Read the answer and worked solution →Joule's law of heating states that H equals:Read the answer and worked solution →The SI unit of electric power is:Read the answer and worked solution →A 60 W bulb operates on 240 V. Find the current through it.Read the answer and worked solution →How much energy in kWh is consumed by a 1500 W appliance running for 4 hours?Read the answer and worked solution →Two bulbs of 60 W and 100 W are designed for 220 V. Which has higher resistance?Read the answer and worked solution →If the current through a resistor is doubled, the heat produced in the same time becomes:Read the answer and worked solution →
Worked practice questions
The SI unit of electric current is the:
- coulomb
- ohm
- volt
- ampere
Show answer and solution
Correct answer: D. ampere
The SI unit of current is the ampere (A).
The SI unit of electric charge is the:
- watt
- ohm
- coulomb
- ampere
Show answer and solution
Correct answer: C. coulomb
The SI unit of charge is the coulomb (C).
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