What is the primary function of an optocoupler?

• To amplify electrical signals

• To transfer electrical signals between isolated circuits using light

• To store electrical energy

• To convert AC to DC

What components typically make up an optocoupler?

• A resistor and a capacitor

• A diode and a transistor

• An LED and a photodetector

• A battery and a switch

How do optocouplers pass signals between circuits?

• Using magnetic fields

• Using sound waves

• Using light

• Using heat

What happens when a voltage is applied across the collector and emitter leads of an optocoupler?

• No current flows

• A large current flows

• A tiny current flows

• The circuit shorts

In what type of applications are optocouplers commonly used?

• Cooking appliances

• Power supplies and communication devices

• Musical instruments

• Sports equipment

What is the main purpose of an optocoupler?

• To control a switching element without physical contact

• To increase the speed of a circuit

• To reduce the size of a device

• To enhance audio quality

Why is electrical isolation important in an optocoupler?

• To increase the speed of the signal.

• To protect sensitive components from high voltages and noise.

• To reduce the size of the circuit.

• To enhance the brightness of the LED.

What makes optocouplers suitable for use in noisy environments?

• Their ability to increase signal strength.

• Their immunity to electromagnetic interference.

• Their large size.

• Their high power consumption.