WPH0 QR Dynamic Papers Physics al Edexcel

info@qrpastpapers.com +2 010 000 875 37

Home
Plans
About
Our Team
Contact Us
more
- Login
- Sign Up

Edexcel | Physics WPH0 | W 16 4 1 | 1 hour 30 minutes

Boards | Edexcel | Physics WPH0

Search By AI inside Physics WPH0 | Type Exam Code | Subject Code | keyword To Search

QP PDF

MS PDF

Q1
Q2
. . . .
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
Q13
Q14
Q15
. . . .
Q16
Q17
Q18

12

Regenerative braking is used in electric cars. When the driver applies the brakes the

motor acts as an electric generator, making use of the rotation of the wheels as they slow

down. This enables the battery to be charged whilst the car is braking.

The diagram shows a coil in a magnetic field which when rotating can be used as an

electric generator.

12

(a)

3 Mark s

The coil rotates.

Explain how this produces a current in the coil.

(QWC – Work must be clear and organised in a logical manner using

technical wording where appropriate)

There is a changing (magnetic) flux (linkage)

Or the coil cuts (magnetic) field / flux (lines)

Inducing an emf (across the ends of the coil/wire)

Generating a current because there is a closed circuit

Or generating a current because coil is in a circuit

12

(b)

1 Mark

State why the current produced in the coil cannot be used directly to charge a battery.

Current produced is a.c. / alternating

Or the battery needs d.c.

12

(c)

3 Mark s

When regenerative braking is being used, explain how the magnitude of the generated

e.m.f. changes as the driver brakes steadily.

(As rate of rotation of wheels reduces)

the rate of change of (magnetic) flux( linkage) reduces

Or rate of cutting field lines decreases

e.m.f. is proportional to the rate of change of flux (linkage)

(induced) e.m.f. decreases (steadily)

Q1
Q2
. . . .
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
Q13
Q14
Q15
. . . .
Q16
Q17
Q18

QR Past Papers.

Email:info@qrpastpapers.com
Phone: +2 0106 606 6272

Home
Legal Information
Terms And Conditions
Return & Refund Policy
Privacy policy

Login
Register
Shop
About us
Contact US
Services

Our Social Networks

All the included past papers are copyrighted © University of Cambridge Local Examinations Syndicate (UCLES), which we have collected from various online sources and gathered together in one website.