Q. In a conductor, if 1500 coulombs of charge enter and 1500 coulombs of charge exit in 5 minutes, what is the electric current?
The correct answer was: 5 Amperes
Q. Which of the following energy types is derived from the sun?
The correct answer was: Solar energy
Q. Two wires made of the same material have a length and radius ratio of 3:4 and 3:2 respectively, and are connected in parallel to a 6V battery. What is the ratio of the electric currents?
The correct answer was: 3:1
Q. A student receives the following graph: (The graph has current (I) in mA and voltage (V) in volts). What is the resistance of the resistor?
The correct answer was: 2 kΩ
Q. In the given circuit diagram, what is the number indicated by the voltmeter?
The correct answer was: 5 V
Q. In an experiment, a current-carrying conductor is placed parallel to the magnetic needle of a compass. If the direction of the current is from south to north, then:
The correct answer was: The north pole of the needle turns towards the west.
Q. A wire with a resistance of 8 ohms has been bent to form a closed circle. What is the effective resistance between points A and B?
The correct answer was: 3/2 Ω
Q. Which of the following statements about the properties of magnetic field lines is not true?
The correct answer was: These force lines are very close together in a magnetic field.
Q. How many resistors of 400 Ω are required to carry a current of 5 Amperes connected to a 200 V line?
The correct answer was: 10
Q. The direction of the force on a current-carrying wire placed in a magnetic field depends on:
The correct answer was: Both the direction of the current and the direction of the field
Q. An electric fuse is based on:
The correct answer was: The thermal effect of electric current
Q. An electric heater is rated at 1 kW. Calculate the heat produced per hour.
The correct answer was: 3600 x 10³ J
Q. Indicate which of the following arrangements can be used to verify Ohm’s law?

The correct answer was: (Image A)
Q. The strength of the magnetic field around a long straight current-carrying wire:
The correct answer was: Is inversely proportional to the distance from the wire.
Q. The V-I graph for the series and parallel combinations of the two given resistors R₁ and R₂ is shown below. Which graph is correctly labeled?
The correct answer was: Both figure (i) and figure (ii)
Q. The purpose of the glass cover on the top of a box-type solar cooker is:
The correct answer was: To reduce heat loss by radiation
Q. To operate efficiently, a wind turbine typically requires a minimum wind speed of about ……..
The correct answer was: 15 km/h
Q. Heaters A and B are rated at 200W and 40W respectively at 220V and are connected in parallel to a 220V supply. Calculate the current drawn by heater B.
The correct answer was: 0.182 A
Q. A small electric generator in your house produces 45 kJ of energy. How long can you run a 45W incandescent bulb with it?
The correct answer was: 16.67 minutes
Q. The S.I. unit of resistivity is
The correct answer was: Ohm meter
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