States of Matter and Atomic Structure Quiz

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What is the smallest particle of an element that retains all its characteristics?

Molecule

Neutron

Atom (correct)

Proton

How many known elements are there currently?

140

103

92

118 (correct)

What do we call the outer shell of an atom?

Valence shell (correct)

Core

Nucleus

Electron cloud

What determines the Atomic number of an atom?

Number of protons Signup and view all the answers

What is the chemical combination of two or more elements called?

Compound Signup and view all the answers

Which method uses heat to produce an EMF/Voltage?

Heat Signup and view all the answers

What is the unit of electric charge?

Coulomb Signup and view all the answers

What is the symbol for electromotive force?

E Signup and view all the answers

In a primary cell, what happens to the electrode?

It erodes and can't be recovered Signup and view all the answers

How do cells connected in parallel affect the output?

Increase the output capacity Signup and view all the answers

In a discharging capacitor, how long does it take for the emf to reach 36.8% of maximum?

Time constant Signup and view all the answers

What is the total capacitance of a parallel circuit containing three capacitors with capacitance of 0.25μF, 0.03μF, and 0.12μF, respectively?

0.4 μF Signup and view all the answers

What type of load would require the use of an electrolytic capacitor?

Heavy load Signup and view all the answers

What is the dielectric strength in a capacitor measured in?

Volts per meter Signup and view all the answers

If a 20 pico farad capacitor with a 1MΩ resistor takes how long to fully charge?

100 microseconds Signup and view all the answers

What is the energy stored in a 2µF capacitor with a potential difference across it of 10V?

20 mJ Signup and view all the answers

If a 5µF capacitor is fully charged to 50V and then connected to a 100Ω resistor, how long will it take to discharge by 63.2%?

0.448 seconds Signup and view all the answers

In an RC circuit, if the resistance is doubled, what happens to the time constant?

It remains the same Signup and view all the answers

If a 2µF capacitor and a 4µF capacitor are connected in series, what is the equivalent capacitance?

0.8µF Signup and view all the answers

What happens to the charge stored in a capacitor if the potential difference across it is doubled?

It becomes four times Signup and view all the answers