Kuiz Fizik Tingkatan 5 Bab 3 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 3 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

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

3.75 A

0.75 A

3.0 A

None

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

960Ω

0.25Ω

14400Ω

4Ω

None

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

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

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

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

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.

None

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

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

To decrease the total internal resistance of the power source.

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.

None

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

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

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

The rate of flow of charge between the two points.

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

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)?

9 kWh

9000 kWh

90 kWh

0.9 kWh

None

When a candle flame is placed in a uniform electric field between two charged plates, the flame spreads out, with a larger portion bending towards the negative plate. What is the primary reason for this observation?

Positive ions are significantly more massive and larger than negative ions (electrons).

Negative ions move faster towards the positive plate, causing less visible spread.

The positive plate attracts more ions from the flame.

The heat from the flame creates more positive ions than negative ions.

None

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

2Ω

3Ω

6Ω

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

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

None

10.

The graph of potential difference (V) across a dry cell versus the current (I) it delivers is a straight line with a negative slope. What physical quantity does the y-intercept of this graph represent?

The internal resistance (r)

The external resistance (R)

The electromotive force (e.m.f., ϵ)

The power dissipated by the cell

None

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