Direct Current -Multiple Choice Questions Quiz

Interactive MCQs on “Direct Current”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: Question: What is Direct Current (DC)?

(a) Electric current that flows in one direction only.
(b) Electric current that changes direction periodically.
(c) Electric current that flows through a capacitor.
(d) Electric current that is generated by a battery.

Question 2: Question: What is the primary source of DC in most electronic devices and household appliances?

(a) Solar panels
(b) Batteries
(c) Power generators
(d) Wind turbines

Question 3: Question: What is the standard unit for measuring electric current?

(a) Volt (V)
(b) Ampere (A)
(c) Ohm (Ω)
(d) Watt (W)

Question 4: Question: Which device is commonly used to convert DC to AC in electronic devices?

(a) Resistor
(b) Capacitor
(c) Diode
(d) Inverter

Question 5: Question: What is the direction of current flow in a typical battery-powered DC circuit?

(a) From positive to negative terminal of the battery.
(b) From negative to positive terminal of the battery.
(c) Random direction due to continuous switching of polarity.
(d) The direction depends on the type of device.

Question 6: Question: What is the voltage polarity across the terminals of a DC battery?

(a) Positive terminal has higher voltage than the negative terminal.
(b) Positive terminal has lower voltage than the negative terminal.
(c) Both terminals have the same voltage.
(d) The voltage polarity depends on the battery type.

Question 7: Question: Which of the following statements about the current direction in a DC circuit is correct?

(a) Current direction is always from positive to negative.
(b) Current direction is always from negative to positive.
(c) Current direction changes continuously with time.
(d) Current direction depends on the type of load connected.

Question 8: Question: Which type of current is used in most electronic devices, such as computers and smartphones?

(a) AC only
(b) DC only
(c) Both AC and DC
(d) Neither AC nor DC

Question 9: Question: What is the typical frequency of a DC circuit?

(a) 60 Hz
(b) 50 Hz
(c) 0 Hz
(d) It varies depending on the application.

Question 10: Question: What device is commonly used to control the voltage in a DC circuit?

(a) Diode
(b) Transformer
(c) Capacitor
(d) Voltage regulator