Question: Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?

• 1. 50
• 2. 100
• 3. 150
• 4. 200

Question: Which of the following statements is correct ___________?

• 1. Air capacitors have a black band to indicate the outside foil
• 2. Electrolytic capacitor must be connected in the correct polarity
• 3. Ceramic capacitors must be connected in the correct polarity
• 4. Mica capacitors are available in capacitance value of 1 to 10 pF

Question: If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because__________________?

• 1. varying voltage produces the charging and dicharging currents
• 2. of high peak value
• 3. charging current can flow
• 4. discharge current can flow

Question: A dielectric material must be____________?

• 1. resistor
• 2. insulator
• 3. good conductor
• 4. semi conductor

Question: The capacitance of a capacitor is not affected by____________?

• 1. distance between plates
• 2. area of plates
• 3. thickness of plates
• 4. all of the above

Question: The units of capacitance are____________?

• 1. volts/coulomb
• 2. coulombs/volt
• 3. ohms
• 4. henry/Wb

Question: If three 10 uF capacitors are connected in parallel, the net cararitance is___________?

• 1. 20 uF
• 2. 30 uE
• 3. 40 uF
• 4. 50 uF

Question: Which of the following is not a vector ___________?

• 1. Linear momentum
• 2. Angular momentum
• 3. Electric field
• 4. Electric potential

Question: The lines of force due to charged particles are_________?

• 1. always straight
• 2. always curved
• 3. sometimes curved
• 4. none of the above

Question: If the sheet of a bakelite is inserted between the plates of an air capacitor, the capacitance will__________?

• 1. decrease
• 2. increase
• 3. remains unchanged
• 4. become zero