The diagram shows a lighted candle placed between two parallel metal plates connected to Extra high tension (E.H.T) power supply.
What happens to the candle flame when the E.H.T power is switched on?
The diagram below shows a student touching the dome of the Van de Graff generator.
Source: fishersci
Why does her hair stand straight?
(A)
The negative charges from her body flow to the Van de Graff generator, thus leaving all the positive charges on her hair repelling each other.
(B)
The positive charges from her body flow to the Van de Graff generator, thus leaving all the negative charges on her hair repelling each other.
(C)
The positive charges from the Van the Graff flow to her body, thus her hair now is positively charged and repels each other.
(D)
The negative charges from the Van the Graff flow to her body, thus her hair now is negatively charged and repels each other.
Source: Trial SPM Sarawak 2019
The charge flowing in an electric circuit in one minute is \(3.0 \space \text C\).
What is the current in this circuit?
(A) \(0.05 \space \text A\)
(B) \(3.0 \space \text A\)
(C) \(20.0 \space \text A\)
(D) \(180.0 \space \text A\)
Source: SPM 2011
An electric current of \(600 \space \text {mA}\) flows through a resistor in \(3\) seconds.
What is the number of electrons that pass through the resistor?
(Charge per electron = \(1.60 \times 10^{-19} \space \text C\))
(A) \(3.750 \times 10^{18}\)
(B) \(1.125 \times 10^{19}\)
(C) \(3.750 \times 10^{21}\)
(D) \(1.125 \times 10^{22}\)
Source: SPM 2017
A \(300 \space \text C\) charge flows across a bulb in every \(2\) minutes.
What is the value of the current flowing in the bulb?
(A) \(1.00 \space \text A\)
(B) \(1.50 \space \text A\)
(C) \(2.00 \space \text A\)
(D) \(2.50 \space \text A\)
There is something wrong with this question.