Grade 10 Random

1.Which is the correct sequence of the components of a reflex arc?

• a) Receptors → Muscles → Sensory neuron → Motor neuron → Spinal cord

• (b) Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle

• c) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle

• (d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

____is the alloy of Cu and Zn

Resistivity will change if________ will be changed.

• Lenght

• Temperature

• Nature Of Material

• Area Of Cross Section

• Mass

a unit that measures the flow of a current is called ______

• ampere

• volt

• watt

• ohm

Resistance(R) of a material would be equal to resistivity(ρ) when________ ?

(Where L= Lenght, A= Area Of Cross Section)

• $L=\rho$

• $\ A=L$

• $A=\rho$

• $L=R$

Which statement best describes the circuit in the diagram?

• It is a series circuit.
• It is a parallel circuit.
• There are 2 paths.
• The circuit is opened.

In the given circuit , after 4Ω resistor is removed and the path is closed to keep circuit closed , by how much the current changes?

• 50%

• 100%

• 200%

• 1000%

Parts of the brain

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•