Waec Physics 2011 Past Questions and Answers

Question 36:

• WAEC 2011

The capacitance of a parallel-plate capacitor

A. Decreases when the seperation between the plate decreases
B. Increases when the optential difference between the plates is increased
C. Is greater without a dielectric material between the plates than with a dielectric
D. Is greater with a dielectric between the plates than without a dielectric.

Question 37:

• WAEC 2011

When the pointed end of an uncharged optical pin is brought near the cap cf a positively charged electroscope, it is observed that the gold

A. Collapse slowly
B. Vibrate
C. Are not affected
D. Diverge rapidly

Question 38:

• WAEC 2011

Which of the following substances does not conduct electricity?

A. Graphite
B. Glass
C. Sulphuric acid
D. Table salt solution

Question 39:

• WAEC 2011

The unit of capacitance is

A. Farad
B. Coulomb
C. Henry
D. Ohms

Question 40:

• WAEC 2011

An ammeter with a full scale deflection of 10mA has an internal resistance 0.5\(\Omega\). calculate the resistance of the shunt required to adapt it to read up to 3A

A. 0.0167\(\Omega\)
B. 0.0130\(\Omega\)
C. 0.0250\(\Omega\)
D. 0.1000\(\Omega\)