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Diagram 1 shows a negatively charged electroscope. A negatively charged plastic rod is brought near the brass cap of the electroscope. Which of the following can be observed?
The gold foil diverges wider
The gold foil collapses
The position of the gold foil remains unchanged
The gold foil diverges then collapses.
Which of the following shows the correct way of connecting the voltmeter to determine the voltage across the bulb?
Diagram 2 shows the arrangement of four identical resistors in a circuit. What is the effective resistance of the resistor?
Diagram 3 shows the setup of the apparatus to study the pattern of the magnetic field produced by the current flowing in the wires. Which of the following diagrams shows the CORRECT illustration of the magnetic field produced?
Complete the statements below. Choose whether it is [different / same].
Every resistor in the series circuit receives the ____________ amount of current.
Complete the statement below. Choose whether it is [increase / decrease]
Adding a resistor to a parallel circuit ______________ the effective resistance of the circuit.
Check the correct answers to the electrical components
Tick the correct statements.
State TWO characteristics of magnetic field lines.
The closer the field lines, the stronger the magnetic field
The further the field lines, the stronger the magnetic field
Magnetic field lines are always converging on each other
Magnetic field lines never overlap
State the rule used to determine the direction of the magnetic field.
Left feet grip rule
Right feet grip rule
Left hand grip rule
Right hand grip rule
Based on the table above, which of the following deduces the relationship between the number of turns of a coil and the number of pins attracted?
The lower the number of turns of a coil, the more number of pins attracted
The higher the number of turns of a coil, the lower the number of pins attracted
The higher the number of turns of a coil, the more number of pins attracted
There is no correlation between the number of turns of a coil with the number of pins attracted.
Calculate the effective resistance, R. State the answer to 2 decimal places.
Calculate the current, I. State the answer to 2 decimal places.
What is the effective resistance in this circuit?
Which of the following is NOT the advantages of a series circuit?
Increase in voltage will supply more electric current
Each component in the circuit receives the same amount of current
Every component is controlled by the same switch
Each component in the circuit can be switched on or off separately
What is the voltmeter reading if the current flowing in this circuit is 3 A?