Physics

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Physics

You will be given 4 physics questions to solve in 6 minutes and 40 seconds or 1 minute and 40 seconds (100 seconds) per question.

1 / 4

Three resistors are connected to a 20V battery with a constant supply. One of the resistors is a variable resistor.

The resistance of the variable resistor is gradually increased from zero to 5 Ω._x000d__x000d_Which graph shows how the current from the battery varies with the resistance (R) of the variable resistor?

2 / 4

Which one of the following is NOT an example of simple harmonic motion?

3 / 4

At the melting point, which of the following are correct about paraffin wax?
1. The substance becomes more disordered.
2. The wax takes in heat but its temperature stays the same.
3. Bonds between the carbon and hydrogen atoms are broken.

4 / 4

Three identical capacitors are connected as follows:

Which of the following shows the order of increasing capacitance (smallest first)?

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