What Is The Potential Difference VB VA In The Circuit? - Fixanswer

7 What is the potential difference VB – VAwhen the I= 1.5 A in the circuit segment below? Without the EMFs, the potential difference is -30V. … Finally, the potential difference VB –

VA = -30V+8V=-22V

.

How is VB Va potential difference calculated?

Let the two terminals be A and B. Therefore the voltage at A is VA = 15 V and the voltage at B is VB = 5 V. Then the potential difference between A and B is the voltage across the resistor.

VAB = VA – VB = 15 – 5 =

10 V.

What does Va VB mean?

The equation for

relative velocity

is as follows: VAB = VA – VB Where: VAB = is the velocity of body A as observed by body B VA = velocity of body A VB = velocity of body B (alternatively, this can be switched around to find VBA, which is the velocity of body B relative to body A.

What quantity does the ammeter measure?

A device called an ammeter is used to measure

current

. Some types of ammeter have a pointer on a dial, but most have a digital display. To measure the current flowing through a component in a circuit, you must connect the ammeter in series with it.

What is the value of i just after pressing the key K?

Just after pressing the key K, the inductor offers infinite resisstance. So, net resistance will be

14Ω

.

What is the magnitude of the potential difference?

One Volt is equivalent to

one Joule per Coulomb

. If the electric potential difference between two locations is 1 volt, then one Coulomb of charge will gain 1 joule of potential energy when moved between those two locations.

What is the potential difference between two points?

Potential difference is

the difference in the amount of energy that charge carriers have between two points

in a circuit. **Measured in Volts: **Potential difference (p.d.) is measured in volts (V) and is also called voltage.

How is potential difference calculated?

Multiply the amount of the current by the amount of resistance in the circuit. The result of the multiplication will be the potential difference, measured in volts. This formula is known as

Ohm’s Law, V = IR.

What does VAB mean voltage?

In double notation you are specifying a specific location for a reference (ie Vab is

the voltage at ‘a’ with respect to the voltage at ‘b’

, which in your example is the voltage across R2. Vbc is the voltage across R1, and Vac is the combined voltage across both).

Why is VAB VAB VA VB?

Vab is scalar

and unlike the convention followed for vectors, where R12= R2 -R1, we do Vab = Va -Vb, where b is the initial point and a is the final point. If we take initial point as the point where potential becomes zero i.e at infinity, we get absolute potential. So that way Vab will always be Va-Vb.

What is potential difference between A and B?

from the slits. Fringe width is found out to be ‘a’. When the electron beam is accelerated through a potential difference

4V

, the fringe width is found out to be ‘b’.

What is the value VAB?

The value Vab is

equal to the difference in potential energy

, per coulomb of charge!

What happens when ammeter is connected in parallel?

When ammeter is connected in parallel to the circuit,

net resistance of the circuit decreases

. Hence more current is drawn from the battery, which damages the ammeter.

Why is ammeter always connected in series?

Why is Ammeter Connected in Series? In a series connection,

the current flowing through all the components of the circuit is the same

. Ammeter aims at measuring the current in the circuit, hence it is connected in series so that the same current that is there in the circuit flows through it and gets measured.