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Fields and their consequences (A-level only)

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Question 1

An electronics engineer is designing a sub-miniature parallel-plate capacitor for an integrated circuit. They are evaluating four candidate dielectric thin-films to insert between two identical conductive plates of fixed area.

Which combination of relative permittivity and film thickness results in the lowest capacitance?

Relative permittivity: $3.5$ , Film thickness: $μm0.50\ \mu\text{m}$

Relative permittivity: $4.8$ , Film thickness: $μm1.2\ \mu\text{m}$

Relative permittivity: $7.5$ , Film thickness: $μm2.5\ \mu\text{m}$

Relative permittivity: $9.0$ , Film thickness: $μm2.0\ \mu\text{m}$

Markscheme

Fields and their consequences (A-level only) Questions

A Level
Physics
Fields and their consequences (A-level only)

Fields and their consequences (A-level only)

Question bank

Fields and their consequences (A-level only)

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

Question 1

Which combination of relative permittivity and film thickness results in the lowest capacitance?

Relative permittivity: $3.5$ , Film thickness: $μm0.50\ \mu\text{m}$

Relative permittivity: $4.8$ , Film thickness: $μm1.2\ \mu\text{m}$

Relative permittivity: $7.5$ , Film thickness: $μm2.5\ \mu\text{m}$

Relative permittivity: $9.0$ , Film thickness: $μm2.0\ \mu\text{m}$

Markscheme

Fields and their consequences (A-level only) Questions

A Level
Physics
Fields and their consequences (A-level only)