Kuiz Fizik Tingkatan 5 Bab 3 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 3 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

Three resistors with resistances of 6 Ω, 6 Ω, and 6 Ω are connected in parallel. What is the effective resistance of this combination?

18Ω

3Ω

2Ω

6Ω

None

Which of the following statements correctly distinguishes between an Ohmic conductor and a non-Ohmic conductor?

The V-I graph for an Ohmic conductor is a curve, while for a non-Ohmic conductor it is a straight line through the origin.

An Ohmic conductor has a constant voltage, while a non-Ohmic conductor has a constant current.

Ohmic conductors are typically insulators, while non-Ohmic conductors are metals.

An Ohmic conductor’s resistance remains constant as current changes, whereas a non-Ohmic conductor’s resistance changes.

None

If an appliance with a power rating of 100 W is used for 3 hours a day for 30 days, how much electrical energy does it consume in kilowatt-hours (kWh)?

0.9 kWh

9000 kWh

90 kWh

9 kWh

None

What is the definition of potential difference (V) between two points?

The total energy supplied by a source to move one coulomb of charge in a complete circuit.

The opposition to the flow of charge between the two points.

The rate of flow of charge between the two points.

The work done to move one coulomb of charge from one point to another.

None

What is the primary advantage of connecting dry cells in series?

To keep the total voltage the same as a single cell but increase the current capacity.

To increase the total electromotive force (e.m.f.) of the power source.

To decrease the total internal resistance of the power source.

To allow the cells to last longer by sharing the current load.

None

A wire has a resistance R. If the wire is replaced by another wire of the same material and length but with twice the diameter, what will be the new resistance?

R/4

R/2

None

An electric field is established between two parallel plates separated by a distance of 5 cm. If the potential difference between the plates is 2000 V, what is the magnitude of the electric field strength?

40000 Vm −1

400 Vm −1

100 Vm−1

100000 Vm −1

None

Which of the following describes the characteristic of a superconductor?

Its resistance increases dramatically as temperature decreases

It has very high resistivity at room temperature.

It can conduct electricity with zero resistance below a certain critical temperature.

It is a type of insulator that becomes a conductor only at very high temperatures.

None

A dry cell has an e.m.f. of 1.5 V and an internal resistance of 0.5 Ω. If it is connected to an external resistor of 2.0 Ω, what is the current flowing in the circuit?

0.6 A

3.0 A

0.75 A

3.75 A

None

10.

A light bulb is labeled '60W, 240V'. What is the resistance of the bulb's filament when it is operating under normal conditions?

0.25Ω

960Ω

4Ω

14400Ω

None

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