B. An igneous rock
C. An ore
D. An organic compound
A rock containing valuable minerals that can be mined is called an ore. The correct option is C.
Ore is a deposit of one or more valuable minerals present inside the Earth's crust.
Metals essential to industry and trade, such as copper, gold, and iron, are found in the most valuable ore deposits. Copper ore is mined for a number of industrialapplications.
Ore is natural rock or sediment that contains one or more valuable minerals, usually metals, and can be mined, treated, and sold for a profit.
Mining extracts ore from the Earth, which is then treated or refined, often through smelting, to extract valuable metals or minerals.
Crushing the rock is the first step in extractingore from it. Heap leaching, flotation, or smelting are methods for extracting ore from rock.
Thus, the correct option is C.
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Explanation :
The direction of current flow is in opposite direction to that of the direction of electron flow.
Electric current is defined as the electric charge per unit time. Simply it is the flow of electrons in a circuit. When an electric potential is applied in a circuit, the current moves from the positive terminal of a battery to the negative terminal.
But the electrons travel from negative to the positive terminal i.e in the direction opposite to that of current flow.
b. the color of the star.
c. Kepler's laws.
d. binary star systems.
Answer:
D. Binary Star Systems
Explanation:
Answer:
Electrical energy
Explanation:
Electrical energy is the form of energy that results from the existence of an electric current, that is, a flow of electrical charges, through a metallic conductor cable as a result of the potential difference that a generator is applying at its ends.
Answer:
Current, I = 8 Amps
Explanation:
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
Given the following data;
Resistance, R = 30 ohms
Voltage, V = 240V
To find the current;
Current, I = 8 Amps
Therefore, the current of the dryer is 8 Amperes.