# 35 Lecture

## PHY301

### Midterm & Final Term Short Notes

Load voltage and current are essential concepts in circuit theory that are used to understand the behavior of electrical circuits.

## Important Mcq's Midterm & Finalterm Prepration Past papers included

A. The voltage across a load

B. The voltage supplied to a load

C. The voltage dropped across a resistor

D. The voltage across a capacitor

A. The current flowing through a load

B. The current supplied to a load

C. The current flowing through a resistor

D. The current flowing through a capacitor

What is the relationship between voltage, current, and resistance?

A. V = IR

B. I = RV

C. R = VI

D. V = I/R

What is the power consumed by a load with a voltage of 10V and a current of 2A?

A. 5W

B. 10W

C. 15W

D. 20W

Answer: D. 20W (P = VI = 10V x 2A = 20W)

A. A load that stores and releases electrical energy

B. A load that produces heat or light

C. A load that is easy to pass current through

D. A load that is difficult to pass current through

A. A load that produces heat or light

B. A load that is easy to pass current through

C. A load that stores and releases electrical energy

D. A load that is difficult to pass current through

For a capacitive load, what is the phase difference between load voltage and current?

A. 0 degrees

B. 45 degrees

C. 90 degrees

D. 180 degrees

For an inductive load, what is the phase difference between load voltage and current?

A. 0 degrees

B. 45 degrees

C. 90 degrees

D. 180 degrees

What is a multimeter used for?

A. Measuring voltage, current, and resistance

B. Measuring only voltage

C. Measuring only current

D. Measuring only resistance

Answer: A. Measuring voltage, current, and resistance

What is an oscilloscope used for?

A. Displaying the voltage waveform over time

B. Measuring only voltage

C. Measuring only current

D. Measuring only resistance

Answer: A. Displaying the voltage waveform over time

## Subjective Short Notes Midterm & Finalterm Prepration Past papers included

Answer: Load voltage refers to the voltage that is present across a load, which is typically a resistor, capacitor, or inductor.

Answer: Load current is the current that flows through a load, which is determined by the resistance of the load and the voltage across it.

What is Ohm's Law?

Answer: Ohm's Law states that the voltage across a resistor is proportional to the current flowing through it. Mathematically, this can be expressed as V = IR, where V is the voltage across the resistor, I is the current flowing through it, and R is the resistance of the resistor.

How is power consumed by a load calculated?

Answer: The power consumed by a load can be calculated using the equation P = IV, where P is the power consumed, I is the current flowing through the load, and V is the voltage across the load.

Answer: A resistive load is a device or component that resists the flow of electrical current and produces heat or light, such as incandescent light bulbs and heating elements.

Answer: A reactive load is a device or component that stores and releases electrical energy, such as capacitors and inductors.

What is the phase difference between load voltage and current for a capacitive load?

What is the phase difference between load voltage and current for an inductive load?

What are multimeters used for?

Answer: Multimeters are devices that measure voltage, current, and resistance, and are used to troubleshoot circuits and diagnose problems.

What are oscilloscopes used for?

Answer: Oscilloscopes are devices that display the voltage waveform over time and are used to measure the characteristics of electrical signals, such as their frequency and amplitude.