ISE02Day03

What is the primary use of a Wheatstone Bridge?

• • Measuring voltage

• • Measuring current

• • Measuring resistance

• Measuring power

In a Wheatstone Bridge, what condition must be satisfied for the bridge to be in equilibrium?

• • The current through the bridge must be zero.

• • The product of the resistances in the opposite arms must be equal.

• • The voltage across the bridge must be zero.

• • The total current must be zero.

If the resistances in a Wheatstone Bridge are R1=100Ω, R2=100Ω,R3=200Ωand R4​ is unknown, what is R4,​ if the bridge is in equilibrium?

• • 150 Ω

• • 100 Ω

• • 200 Ω

• • 50 Ω

In a Wheatstone Bridge, which resistor is typically used as the variable resistor?

• • R1​

• • R2​

• • R3​

• • R4

What happens to the bridge balance condition if the resistance values in one of the arms of a Wheatstone Bridge are changed?

• • The current through the bridge will changed

• • The voltage source will change.

• • The bridge will become unbalanced.

• • The bridge remains balanced.

According to Kirchhoff's Voltage Law, the sum of the voltage drops around a closed loop is equal to:

• • The sum of all currents in the loop.

• The resistance of the loop.

• • Zero

• • The voltage of the source in that loop

What is the primary principle behind Kirchhoff's Voltage Law (KVL)?

• • Voltage conservation

• • Current conservation

• • Energy conservation

• • Charge conservation

According to Kirchhoff's Current Law, the sum of currents entering a node is equal to:

• • Zero.

• • The resistance of the node

• • The sum of currents leaving the node.

• • The sum of voltages at the node.

If three currents entering a node are 5A, 3A, and 2A, what is the total current leaving the node?

• • 2A

• • 3A

• • 5A

• • 10A

How much Voltage does 100W bulb requires per unit time ?

• 100

• zero

• 50

• It doesn't require voltage