# 32 Lecture

## PHY301

### Midterm & Final Term Short Notes

## DC or Static Resistance

DC or static resistance is an important concept in circuit theory, particularly in the design and analysis of electronic circuits. Resistance, in general, refers to the opposition that a material or component offers to the flow of electrical cur

**Important Mcq's**

Midterm & Finalterm Prepration

Past papers included

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**What is the unit of resistance?**

A. Volt

B. Ohm

C. Ampere

D. Watt

**Answer: B**

**What is DC resistance?**

A. Resistance in AC circuits

B. Resistance in DC circuits

C. Resistance in both AC and DC circuits

D. None of the above

**Answer: B**

**What is the formula for calculating resistance using Ohm's Law?**

A. R = V x I

B. R = V / I

C. R = I / V

D. V = R x I

**Answer: B**

**What is a resistor?**

A. A component that amplifies the signal

B. A component that stores energy

C. A component that resists current flow

D. A component that changes the frequency of the signal

**Answer: C**

**What is the color code on a resistor?**

A. A system of dots that indicate the resistance value

B. A system of letters that indicate the resistance value

C. A system of numbers that indicate the resistance value

D. A system of bands that indicate the resistance value

**Answer: D**

**What is the symbol for resistance?**

A. V

B. I

C. R

D. P

**Answer: C**

**How does increasing resistance affect current flow in a circuit?**

A. Increases current flow

B. Decreases current flow

C. Does not affect current flow

D. None of the above

**Answer: B**

**What is the difference between DC and AC resistance?**

A. DC resistance refers to the resistance in AC circuits, while AC resistance refers to the resistance in DC circuits

B. DC resistance refers to the resistance in DC circuits, while AC resistance refers to the resistance in AC circuits

C. DC resistance refers to the resistance in both AC and DC circuits, while AC resistance refers to the resistance in AC circuits only

D. DC resistance refers to the resistance in both AC and DC circuits, while AC resistance refers to the resistance in DC circuits only

**Answer: B**

**What is the unit of measurement for resistance?**

A. Volt

B. Ohm

C. Ampere

D. Watt

**Answer: B**

**What is Ohm's Law?**

A. A law that describes the relationship between voltage and current in a circuit

B. A law that describes the relationship between resistance and current in a circuit

C. A law that describes the relationship between voltage and resistance in a circuit

D. A law that describes the relationship between power and current in a circuit

**Answer: C**

**Subjective Short Notes**

Midterm & Finalterm Prepration

Past papers included

Download PDF
**What is DC resistance?**

**Answer:** DC resistance, also known as static resistance, is the resistance exhibited by a component when a constant DC voltage is applied to it.

**How is resistance measured?**

**Answer:** Resistance is measured in units called ohms (?) using a multimeter or through the use of color codes on resistors.

**What is Ohm's Law?**

**Answer: **Ohm's Law is a mathematical equation that describes the relationship between current, voltage, and resistance in a circuit. It states that current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R).

**What is the unit of resistance?**

**Answer:** The unit of resistance is the ohm (?).

**What is the difference between DC and AC resistance?**

**Answer: **DC resistance refers to the resistance exhibited by a component when a constant DC voltage is applied, while AC resistance refers to the resistance exhibited when an AC voltage is applied.

**What is a resistor?**

**Answer: **A resistor is a passive electronic component that resists the flow of current and is commonly used in electronic circuits to limit current, divide voltage, and provide biasing.

**What is the color code on a resistor?**

**Answer: **The color code on a resistor is a system of bands that indicate the resistance value of the resistor.

**What is the formula for calculating resistance using Ohm's Law?**

**Answer: **The formula for calculating resistance using Ohm's Law is R = V/I, where R is resistance in ohms, V is voltage in volts, and I is current in amperes.

**How does resistance affect current flow in a circuit?**

**Answer:** The higher the resistance, the lower the current flow, and the lower the resistance, the higher the current flow.

**Why is understanding static resistance important in electronic circuits?**

**Answer:** Understanding static resistance is important in electronic circuits because it determines the current flow through the circuit, which in turn affects the performance of the circuit.